I am trying to implement LazyHGrid on tvOS 14 with a pinned header. If I use standard buttons as grid items, the items scroll properly by changing its focus. However if I use my own custom style for the buttons, the first item is hidden behind the pinned header. Here's a repro code:
struct ContentView: View {
		var rows: [GridItem] = [GridItem(.fixed(113))]
		@State private var selected : Bool = false
		@State private var isFocused : Bool = false
		
		var body: some View {
				VStack (alignment: .leading, spacing: 0) {
						ScrollView([.horizontal]) {
								LazyHGrid (rows: rows, alignment: .top, spacing: 10, pinnedViews: .sectionHeaders, content: {
										Section(header: HeaderView(title: "NBC").border(Color.white)){
												ForEach((0...20), id: \.self) {
														let codepoint = $0 + 0x1f600
														let codepointString = String(format: "%02X", codepoint)
																Button(action: { print("selected")}) {
																		CellView(title: "\(codepointString)")
																}
// Comment out this line - it will start working properly
																.buttonStyle(MyCustomButton())
												}
										}
						 })
					 }
				}
		}
}
struct HeaderView: View {
		@State var title : String
		
		var body: some View {
				VStack {
						Text(title).frame(width: 160)
				}
				.frame(maxWidth: .infinity, alignment: .topLeading)
				.frame(height: 113)
				.background(Color.blue)
		}
}
struct CellView : View {
		@Environment(\.isFocused) var isFocused: Bool
		@State var title : String
		
		var body: some View {
				VStack{
						Text(title).font(.headline)
						Text("Very intersting movie")
				}.padding()
				.background(isFocused ? Color.gray : Color.red)
		}
}
struct MyCustomButton: ButtonStyle {
		func makeBody(configuration: Self.Configuration) -> some View {
				configuration.label
						.frame(minWidth: 0, maxWidth: 300)
						.foregroundColor(.white)
						.background(configuration.isPressed ? Color.red : Color.green)
						
		}
}
AlexYak
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I am having a hard time trying to figured out how to focus on a specific cell/row in the list in the SwiftUI 2.0 and tvOS 14. I need to be able to focus and select a specific record when I am navigated to a view. However when the focus is switched to the list, some random row is focused. I've tried ScrollView and List to create a list of items with Buttons as items and with appropriate prefersDefaultFocus. Nothing works. Here's some sample code:
struct ChannelListView: View {
@Namespace private var namespace
@ObservedObject var viewModel : LiveViewModel
@State var selection = Set<ChannelItem>()
var body: some View {
List(viewModel.channels, selection: $selection){ item in
ScrollViewReader { proxy in
Button(action: {
}){
ChannelItemView(item: item, selectedItem: $viewModel.selectedChannel, onSelected: { id in
})
.padding(.vertical, 2)
}
.buttonStyle(ChannelButtonStyle())
.prefersDefaultFocus(item == viewModel.selectedChannel, in: namespace)
}
}
.focusScope(namespace)
}
}
Any pointers?
Neither navigation or Button's actions working in the pages of the TabView with PageTabViewStyle. Repro code:
@State private var selection = 0
var body: some View {
VStack {
TabView(selection: $selection) {
Button(action: {
print("First selected")
}){
Text("Fist")
}
.tag(0)
.buttonStyle(PlainButtonStyle()
Button(action: {
print("Second selected")
}){
Text("Second").tag(1)
}
.tag(1)
Button(action: {
print("Third selected")
}){
Text("Third")
}
.tag(2)
}
.tabViewStyle(PageTabViewStyle(indexDisplayMode: .always))
.frame(width: 900, height: 400)
.background(Color.blue)
}
}
}